| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.el; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| import javax.el.ELContext; |
| import javax.el.ExpressionFactory; |
| import javax.el.ValueExpression; |
| import javax.el.ValueReference; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertNotNull; |
| |
| import org.junit.Test; |
| |
| import org.apache.jasper.el.ELContextImpl; |
| |
| public class TestValueExpressionImpl { |
| |
| @Test |
| public void testGetValueReference() { |
| ExpressionFactory factory = ExpressionFactory.newInstance(); |
| ELContext context = new ELContextImpl(factory); |
| |
| TesterBeanB beanB = new TesterBeanB(); |
| beanB.setName("Tomcat"); |
| ValueExpression var = |
| factory.createValueExpression(beanB, TesterBeanB.class); |
| context.getVariableMapper().setVariable("beanB", var); |
| |
| ValueExpression ve = factory.createValueExpression( |
| context, "${beanB.name}", String.class); |
| |
| // First check the basics work |
| String result = (String) ve.getValue(context); |
| assertEquals("Tomcat", result); |
| |
| // Now check the value reference |
| ValueReference vr = ve.getValueReference(context); |
| assertNotNull(vr); |
| |
| assertEquals(beanB, vr.getBase()); |
| assertEquals("name", vr.getProperty()); |
| } |
| |
| @Test |
| public void testGetValueReferenceVariable() { |
| ExpressionFactory factory = ExpressionFactory.newInstance(); |
| ELContext context = new ELContextImpl(factory); |
| |
| TesterBeanB beanB = new TesterBeanB(); |
| beanB.setName("Tomcat"); |
| ValueExpression var = |
| factory.createValueExpression(beanB, TesterBeanB.class); |
| context.getVariableMapper().setVariable("beanB", var); |
| |
| ValueExpression var2 = factory.createValueExpression( |
| context, "${beanB.name}", String.class); |
| |
| context.getVariableMapper().setVariable("foo", var2); |
| |
| ValueExpression ve = factory.createValueExpression( |
| context, "${foo}", ValueExpression.class); |
| |
| |
| // Now check the value reference |
| ValueReference vr = ve.getValueReference(context); |
| assertNotNull(vr); |
| |
| assertEquals(beanB, vr.getBase()); |
| assertEquals("name", vr.getProperty()); |
| } |
| |
| @Test |
| public void testBug49345() { |
| ExpressionFactory factory = ExpressionFactory.newInstance(); |
| ELContext context = new ELContextImpl(factory); |
| |
| TesterBeanA beanA = new TesterBeanA(); |
| TesterBeanB beanB = new TesterBeanB(); |
| beanB.setName("Tomcat"); |
| beanA.setBean(beanB); |
| |
| ValueExpression var = |
| factory.createValueExpression(beanA, TesterBeanA.class); |
| context.getVariableMapper().setVariable("beanA", var); |
| |
| ValueExpression ve = factory.createValueExpression( |
| context, "${beanA.bean.name}", String.class); |
| |
| // First check the basics work |
| String result = (String) ve.getValue(context); |
| assertEquals("Tomcat", result); |
| |
| // Now check the value reference |
| ValueReference vr = ve.getValueReference(context); |
| assertNotNull(vr); |
| |
| assertEquals(beanB, vr.getBase()); |
| assertEquals("name", vr.getProperty()); |
| } |
| |
| @Test |
| public void testBug50105() { |
| ExpressionFactory factory = ExpressionFactory.newInstance(); |
| ELContext context = new ELContextImpl(factory); |
| |
| TesterEnum testEnum = TesterEnum.APPLE; |
| |
| ValueExpression var = |
| factory.createValueExpression(testEnum, TesterEnum.class); |
| context.getVariableMapper().setVariable("testEnum", var); |
| |
| // When coercing an Enum to a String, name() should always be used. |
| ValueExpression ve1 = factory.createValueExpression( |
| context, "${testEnum}", String.class); |
| String result1 = (String) ve1.getValue(context); |
| assertEquals("APPLE", result1); |
| |
| ValueExpression ve2 = factory.createValueExpression( |
| context, "foo${testEnum}bar", String.class); |
| String result2 = (String) ve2.getValue(context); |
| assertEquals("fooAPPLEbar", result2); |
| } |
| |
| @Test |
| public void testBug51177ObjectMap() { |
| ExpressionFactory factory = ExpressionFactory.newInstance(); |
| ELContext context = new ELContextImpl(factory); |
| |
| Object o1 = "String value"; |
| Object o2 = Integer.valueOf(32); |
| |
| Map<Object,Object> map = new HashMap<>(); |
| map.put("key1", o1); |
| map.put("key2", o2); |
| |
| ValueExpression var = |
| factory.createValueExpression(map, Map.class); |
| context.getVariableMapper().setVariable("map", var); |
| |
| ValueExpression ve1 = factory.createValueExpression( |
| context, "${map.key1}", Object.class); |
| ve1.setValue(context, o2); |
| assertEquals(o2, ve1.getValue(context)); |
| |
| ValueExpression ve2 = factory.createValueExpression( |
| context, "${map.key2}", Object.class); |
| ve2.setValue(context, o1); |
| assertEquals(o1, ve2.getValue(context)); |
| } |
| |
| @Test |
| public void testBug51177ObjectList() { |
| ExpressionFactory factory = ExpressionFactory.newInstance(); |
| ELContext context = new ELContextImpl(factory); |
| |
| Object o1 = "String value"; |
| Object o2 = Integer.valueOf(32); |
| |
| List<Object> list = new ArrayList<>(); |
| list.add(0, o1); |
| list.add(1, o2); |
| |
| ValueExpression var = |
| factory.createValueExpression(list, List.class); |
| context.getVariableMapper().setVariable("list", var); |
| |
| ValueExpression ve1 = factory.createValueExpression( |
| context, "${list[0]}", Object.class); |
| ve1.setValue(context, o2); |
| assertEquals(o2, ve1.getValue(context)); |
| |
| ValueExpression ve2 = factory.createValueExpression( |
| context, "${list[1]}", Object.class); |
| ve2.setValue(context, o1); |
| assertEquals(o1, ve2.getValue(context)); |
| } |
| |
| |
| /* |
| * Test returning an empty list as a bean property. |
| */ |
| @Test |
| public void testBug51544Bean() throws Exception { |
| ExpressionFactory factory = ExpressionFactory.newInstance(); |
| ELContext context = new ELContextImpl(factory); |
| |
| TesterBeanA beanA = new TesterBeanA(); |
| beanA.setValList(Collections.emptyList()); |
| |
| ValueExpression var = |
| factory.createValueExpression(beanA, TesterBeanA.class); |
| context.getVariableMapper().setVariable("beanA", var); |
| |
| ValueExpression ve = factory.createValueExpression( |
| context, "${beanA.valList.size()}", Integer.class); |
| |
| Integer result = (Integer) ve.getValue(context); |
| assertEquals(Integer.valueOf(0), result); |
| } |
| |
| |
| /* |
| * Test using list directly as variable. |
| */ |
| @Test |
| public void testBug51544Direct() throws Exception { |
| ExpressionFactory factory = ExpressionFactory.newInstance(); |
| ELContext context = new ELContextImpl(factory); |
| |
| List<?> list = Collections.emptyList(); |
| |
| ValueExpression var = |
| factory.createValueExpression(list, List.class); |
| context.getVariableMapper().setVariable("list", var); |
| |
| ValueExpression ve = factory.createValueExpression( |
| context, "${list.size()}", Integer.class); |
| |
| Integer result = (Integer) ve.getValue(context); |
| assertEquals(Integer.valueOf(0), result); |
| } |
| |
| |
| @Test |
| public void testBug56522SetNullValue() { |
| ExpressionFactory factory = ExpressionFactory.newInstance(); |
| ELContext context = new ELContextImpl(factory); |
| |
| TesterBeanB beanB = new TesterBeanB(); |
| beanB.setName("Tomcat"); |
| ValueExpression var = |
| factory.createValueExpression(beanB, TesterBeanB.class); |
| context.getVariableMapper().setVariable("beanB", var); |
| |
| ValueExpression ve = factory.createValueExpression( |
| context, "${beanB.name}", String.class); |
| |
| // First check the basics work |
| String result = (String) ve.getValue(context); |
| assertEquals("Tomcat", result); |
| |
| // Now set the value to null |
| ve.setValue(context, null); |
| |
| assertEquals("", beanB.getName()); |
| } |
| } |